Alexander I / Alaxandair mac Maíl Coluim (1078-1124)

called "The Fierce", Alexander was the fourth son of Malcolm III.

On the death of Edgar in 1107 he succeeded to the Scottish crown; but, in accordance with Edgar's instructions, their brother David was granted an appanage in southern Scotland. Edgar's will granted David the lands of the former kingdom of Strathclyde or Cumbria, and this was apparently agreed in advance by Edgar, Alexander, David and their brother-in-law Henry I of England. However, in 1113, perhaps at Henry's instigation, and with the support of his Anglo-Norman, David demanded, and received, additional lands in Lothian along the Upper Tweed and Teviot. David did not receive the title of king, but of "prince of the Cumbrians", and his lands remained under Alexander's final authority.

The dispute over the eastern marches does not appear to have caused lasting trouble between Alexander and Henry of England. In 1114 he joined Henry on campaign in Wales against Gruffydd ap Cynan of Gwynedd. Alexander's marriage with Henry's illegitimate daughter Sybilla de Normandy may have occurred as early as 1107, or as at late as 1114.

William of Malmesbury's account attacks Sybilla, but the evidence argues that Alexander and Sybilla were a devoted but childless couple and Sybilla was of noteworthy piety. Sybilla died in unrecorded circumstances at Eilean nam Ban in July, 1122 and was buried at Dunfermline Abbey. Alexander did not remarry and Walter Bower wrote that he planned an Augustinian Priory at the Eilean nam Ban dedicated to Sybilla's memory, and he may have taken steps to have her venerated.

Alexander had at least one illegitimate child, Máel Coluim mac Alaxandair, who was later to be involved in a revolt against David I in the 1130s. He was imprisoned at Roxburgh for many years afterwards, perhaps until his death some time after 1157.

Alexander was, like his brothers Edgar and David, a notably pious king. He was responsible for foundations at Scone and Inchcolm. Alexander also patronised Saint Andrews, granting lands intended for an Augustinian Priory, which may have been the same as that intended to honour his wife.

For all his religiosity, Alexander was not remembered as a man of peace. He manifested the terrible aspect of his character in his reprisals in the Mormaerdom of Moray. Andrew of Wyntoun's Orygynale Cronykil of Scotland says that Alexander was holding court at Invergowrie when he was attacked by "men of the Isles". Walter Bower says the attackers were from Moray and Mearns. Alexander pursued them north, to "Stockford" in Ross (near Beauly) where he defeated them. This, says Wyntoun, is why he was named the "Fierce".

Alexander died in April 1124 at his court at Stirling; his brother David succeeded him.